VYPR
High severity7.5NVD Advisory· Published Jul 1, 2026· Updated Jul 24, 2026

CVE-2026-54399

CVE-2026-54399

Description

Uncontrolled Resource Consumption vulnerability in the HTTP/1.1 message parser in Apache HttpComponents Core (5.4.2 and earlier, 5.5-beta1 and earlier) allows an remote attacker to cause a denial of service through memory exhaustion by sending messages with excessive number of headers / excessive header length

Affected packages

Versions sourced from the GitHub Security Advisory.

PackageAffected versionsPatched versions
org.apache.httpcomponents.core5:httpcore5Maven
< 5.4.35.4.3
org.apache.httpcomponents.core5:httpcore5Maven
>= 5.5-alpha1, < 5.5-beta25.5-beta2

Affected products

119

Patches

Vulnerability mechanics

References

6

News mentions

1
CVE-2026-54399 · High · VYPR